滇西北香格里拉拉巴斑岩Cu-Mo矿区隐伏矿预测的综合物探技术应用研究

发布时间：2021-08-01 02:22

　　斑岩型钼矿床是金属钼最重要的来源,也是中国钼矿床的主要类型。在滇西北香格里拉地区的小中甸-丽江一带,分布大量铜、铁、铅、锌、银等多金属矿点和矿化点。几十年来,这些地区的找矿潜力也一直被关注,但均未能找到规模性矿床。近几年来,在拉吉乡拉巴-铜厂沟一带的勘查找矿中,新勘查发现一个大型斑岩-矽卡岩-热液脉型钼（铜）多金属成矿系统,具有巨大的找矿潜力。勘查结果表明,浅表部的（网）脉状钼（铜、铅、银）矿化通常位于次级断裂及不同方向断裂交汇部位,而深部矿化产于侵位于中三叠统碳酸盐岩中的二长花岗斑岩和闪长玢岩内,形成—套成生联系紧密的矿床组合,即岩体内的斑岩型矿床、内接触带的矽卡岩型矿床及外接触带的（网）脉状矿床,这也被近期开展的工作所不断证实。拉巴钼（铜）矿床即是其中的重要区块,已探获（332+333+334）类资源储量钼金属量63.47万吨,伴生铜金属量3.37万吨、金金属量14.7吨,勘查找矿和相关研究工作仍在进行中,储量逐渐增加,预测钼金属远景储量有望超过150万吨。但区内地表第四系覆盖层厚度大,深部地层及构造发育规律不明,含矿岩体的埋深和形态变化大,致使勘查工作部署的找矿有效性较差。本次在... 

【文章来源】：昆明理工大学云南省

【文章页数】：132 页

【学位级别】：博士

【文章目录】：
摘要
ABSTRACT
ACKNOWLEDGEMENTS
Part of the development work in this thesis has been published paper
CHAPTER Ⅰ INTRODUCTION
    Ⅰ.1 Research justification
    Ⅰ.2 Purpose
    Ⅰ.3 Study area overview
    Ⅰ.4 Content overview
CHAPTER Ⅱ GEOLOGICAL BACKGROUND OF STUDY AREA
    Ⅱ.1 Study area
    Ⅱ.2 Regional geology
        Ⅱ.2.1 Area Geology
        Ⅱ.2.2 Stratum
        Ⅱ.2.3 Regional tectonic
        Ⅱ.2.4 Magmatic rocks
        Ⅱ.2.5 Regional Mineral Resources
    Ⅱ.3 Deposit geology
        Ⅱ.3.1 stratum
        Ⅱ.3.2 Structure
        Ⅱ.3.3 Magmatic rocks
        Ⅱ.3.4 Metamorphism and wall rock alteration
        Ⅱ.3.5 Ore body characteristics
    Ⅱ.4 Characteristic of investigated minerals at region
CHAPTER Ⅲ AN OVERVIEW OF THE ESSENTIAL METHOD
    Ⅲ.1 IP method
        Ⅲ.1.1 Introduction and historical overview
        Ⅲ.1.2 Methodology of Induce Polarization
            Ⅲ.1.2.1 Theoretical background methods of induce polarization
                Ⅲ.1.2.1.1 The phenomenon causes polarization and rock
                Ⅲ.1.2.1.2 Electrical conductivity of rocks in polarized environment
                Ⅲ.1.2.1.3 The polarization factor in the time domain, frequency domain and phasepolarity
                Ⅲ.1.2.1.4 Coefifcient of metal
                Ⅲ.1.2.1.5 Phase polairzation
            Ⅲ.1.2.2 Polarization phase characterized by a number of typical ores
            Ⅲ.1.2.3 Analysis and interpretation of induce polarization method
    Ⅲ.3 EH4 method
        Ⅲ.3.1 The definition of Tellua method
        Ⅲ.3.2 Historical method
        Ⅲ.3.3 The base theory of MT method
    Ⅲ.4 Foundation theory and methodology of magnetic
        Ⅲ.4.1 Introduction to magnetic exploration-historical overview
        Ⅲ.4.2 Earth's magnetic and anomalous magnetic
            Ⅲ.4.2.1 The Earth's Magnetic Field
            Ⅲ.4.2.2 Temporal Variations of the Earth's Magnetic Field-Overview
            Ⅲ.4.2.3 Total field measurements
            Ⅲ.4.2.4 Magnetic Anomaly
        Ⅲ.4.3 Euler 3D method and magnetic exploration
            Ⅲ.4.3.1 Euler's equation
            Ⅲ.4.3.2 Fast Fourier transform
            Ⅲ.4.3.3 Analysis signal
            Ⅲ.4.3.4 Analysis location and depth source
            Ⅲ.4.3.5 FFT filter
                Ⅲ.4.3.5.1 FFT apparent susceptibility filter
                Ⅲ.4.3.5.2 FFT Butterworth Filter
                Ⅲ.4.3.5.3 Gaussian Regional/Residual Filter
                Ⅲ.4.3.5.4 Cosine Roll-off Filter
                Ⅲ.4.3.5.5 Lowpass Filter
                Ⅲ.4.3.5.6 Highpass Filter
CHAPTER IV Analysis and Interpretation of Geophysics Data in Shangri-La LabaPorphyry Cu (-Mo) Ore Field
    Ⅳ.1 Geophysics investigation
    Ⅳ.2 Analysis and interpretation of IP method
        Ⅳ.2.1 Measuring and data survey evaluation
        Ⅳ.2.2 Interpretation
    Ⅳ.3 Analysis and interpretation of EH4 method
        Ⅳ.3.1 Magnetotelluric sounding
        Ⅳ.3.2 Magnetotelluric sounding work
        Ⅳ.3.3 Interpretation
    Ⅳ.4 Analysis and interpretation of magnetic method
        Ⅳ.4.1 Instrument
        Ⅳ.4.2 Magnetic data survey
        Ⅳ.4.3 Software and system capabilities
        Ⅳ.4.4 Analysis and interpretation
CHAPTER V DISCUSSIONS AND CONCLUSIONS
    Ⅴ.Ⅰ Discussion geophysical geology results
        Ⅴ.Ⅰ.1 IP results
        Ⅴ.Ⅰ.2 EH4 results
        Ⅴ.Ⅰ.3 Magnetic results
        Ⅴ.Ⅰ.4 Evalution of combinative method
    Ⅴ.Ⅱ Conclusions
REFERENCE


【参考文献】：
期刊论文
[1]重磁数据三维物性反演方法进展[J]. 陈召曦,孟小红,郭良辉.  地球物理学进展. 2012(02)
[2]大功率激电和CSAMT法在敦化团北地区查找锡钼矿的应用[J]. 王立群,刘国兴,韩江涛,金忠宝.  吉林大学学报(地球科学版). 2008(S1)
[3]大功率激发极化和音频大地电磁联合方法在额尔古纳成矿带寻找隐伏矿的应用研究[J]. 张慧,谢玲琳,吴湘滨.  地质与勘探. 2008(05)
[4]频率域激发极化法有限元数值模拟[J]. 杨晓弘,何继善.  吉林大学学报(地球科学版). 2008(04)
[5]EH4电磁成像系统在金矿勘查中的应用[J]. 樊战军,卿敏,于爱军,李文良,徐德利,陈孝强,吕喜旺.  物探与化探. 2007(S1)
[6]中国地球电磁法新进展和发展趋势[J]. 赵国泽,陈小斌,汤吉.  地球物理学进展. 2007(04)
[7]直流激电法在栾川西部铅锌矿勘查中的应用[J]. 施俊生,殷建武.  CT理论与应用研究. 2006(04)
[8]MT激电效应的模拟研究及在油气检测中的应用[J]. 曹中林,何展翔,昌彦君.  地球物理学进展. 2006(04)
[9]斑岩型钼矿激电测深的找矿模式[J]. 施俊生,殷建武,李清林.  CT理论与应用研究. 2006(03)
[10]岩石复电阻率频谱模型参数的反演[J]. 童茂松,丁柱.  测井技术. 2006(04)



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